Sample TextBox for font glyphs with symbols

MainWindow.xaml

<Window x:Class="WpfFontGlyph.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"
        SizeToContent="Height" Height="100" Width="480">
    <StackPanel>
        <Grid Margin="10">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="1*"/>
                <ColumnDefinition Width="1*"/>
            </Grid.ColumnDefinitions>
            <TextBox Grid.ColumnSpan="2"
                     Text="0ay/AÁÊÑÖ 0ay/AÁÊÑÖ"
                     FontFamily="Verdana" FontSize="36"
                     Padding="3"
                     VerticalContentAlignment="Center"/>

            <Rectangle Grid.Column="0"
                       Stroke="DarkViolet" StrokeThickness="1" StrokeDashArray="1 3"
                       VerticalAlignment="Center" HorizontalAlignment="Stretch"/>
            <Rectangle Grid.Column="1"
                       Stroke="Red" StrokeThickness="1" StrokeDashArray="1 3"
                       VerticalAlignment="Center" Margin="0,3,0,0" HorizontalAlignment="Stretch"/>
        </Grid>
    </StackPanel>
</Window>

This window looks as follows.